[web] convert updating thread activity lastThreadNavigatedTo on web to use sqlite

Summary:
Currently, the redux reducer just updates redux persist thread activity. Realized I was missing this when doing final testing

The non-sqlite implementation can be found at https://phab.comm.dev/D9404

Depends on D11617

Test Plan: Navigated to several different threads on web app and corresponding thread activity entries were found in web database

Reviewers: atul, kamil, ginsu

Reviewed By: atul

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D11665